Dilatancy in slow granular flows
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Kabla, Alexandre J; Senden, Timothy
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When walking on wet sand, each footstep leaves behind a temporarily dry impression. This counterintuitive observation is the most common illustration of the Reynolds principle of dilatancy: that is, a granular packing tends to expand as it is deformed, therefore increasing the amount of porous space. Although widely called upon in areas such as soil mechanics and geotechnics, a deeper understanding of this principle is constrained by the lack of analytical tools to study this behavior....[Show more]
dc.contributor.author | Kabla, Alexandre J | |
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dc.contributor.author | Senden, Timothy | |
dc.date.accessioned | 2009-09-09T03:13:46Z | |
dc.date.accessioned | 2010-12-20T06:04:55Z | |
dc.date.available | 2009-09-09T03:13:46Z | |
dc.date.available | 2010-12-20T06:04:55Z | |
dc.identifier.citation | Physical Review Letters 102.22 (2009): 228301/1-4 | |
dc.identifier.issn | 0031-9007 | |
dc.identifier.issn | 1079-7114 | |
dc.identifier.uri | http://hdl.handle.net/10440/814 | |
dc.identifier.uri | http://digitalcollections.anu.edu.au/handle/10440/814 | |
dc.description.abstract | When walking on wet sand, each footstep leaves behind a temporarily dry impression. This counterintuitive observation is the most common illustration of the Reynolds principle of dilatancy: that is, a granular packing tends to expand as it is deformed, therefore increasing the amount of porous space. Although widely called upon in areas such as soil mechanics and geotechnics, a deeper understanding of this principle is constrained by the lack of analytical tools to study this behavior. Using x-ray radiography, we track a broad variety of granular flow profiles and quantify their intrinsic dilatancy behavior. These measurements frame Reynolds dilatancy as a kinematic process. Closer inspection demonstrates, however, the practical importance of flow induced compaction which competes with dilatancy, leading more complex flow properties than expected. | |
dc.format | 4 pages | |
dc.publisher | American Physical Society | |
dc.rights | http://www.sherpa.ac.uk/romeo/index.php "Author can archive pre-print (ie pre-refereeing) … post-print (ie final draft post-refereeing) … [and] publisher's version/PDF. Link to publisher version … [and] Copyright notice required. Publisher's version/PDF can be used on … employers web site." - from SHERPA/RoMEO site (as at 25/02/10). ©2009 The American Physical Society | |
dc.source | Physical Review Letters | |
dc.source.uri | http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=PRLTAO000102000022228301000001&idtype=cvips&gifs=Yes | |
dc.subject | Keywords: Analytical tool; Complex flow properties; Flow induced; Geotechnics; Granular flows; Granular Packings; Porous space; Practical importance; Reynolds; Confined flow; Granular materials; Soil mechanics; X ray radiography | |
dc.title | Dilatancy in slow granular flows | |
dc.type | Journal article | |
local.identifier.citationvolume | 102 | |
dc.date.issued | 2009-06-03 | |
local.identifier.absfor | 020406 | |
local.identifier.ariespublication | u9210271xPUB262 | |
local.type.status | Published Version | |
local.contributor.affiliation | Kabla, Alexandre J, University of Cambridge | |
local.contributor.affiliation | Senden, Timothy, Research School of Physical Sciences and Engineering, Department of Applied Mathematics | |
local.bibliographicCitation.issue | 22 | |
local.bibliographicCitation.startpage | 228301 | |
local.identifier.doi | 10.1103/PhysRevLett.102.228301 | |
dc.date.updated | 2016-02-24T11:55:23Z | |
local.identifier.scopusID | 2-s2.0-66649099880 | |
local.identifier.thomsonID | 000266685400062 | |
Collections | ANU Research Publications |
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